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    • Dynamic Surface Water Extent rasters - Land Cover Mapping, North Slope of the Arctic National Wildlife Refuge, Alaska, 2019

    Metadata Updated: November 25, 2025

    We prepared a water phenology product from the Landsat Level-3 Dynamic Surface Water Extent (DSWE) science product, which provides a water classification for each Landsat scene at 30 m resolution (Jones 2015, Jones 2019). After masking clouds, cloud shadows, and snow, the DSWE product identities 4 categories of water confidence: 1. Not Water; 2. Open Water, High Confidence; 3. Open Water, Moderate Confidence; 4. Partial Surface Water, Conservative; and 5. Partial Surface Water, Aggressive. We reviewed and summarized the DSWE products for 1999–2018 and prepared two metrics of surface water occurrence (defined as the percentage of the observations when surface water was present): 1. June/July/August, 1999–2018, Conservative Surface Water Occurrence (treating the Partial Surface Water, Aggressive class as Not Water); and 2. June/July/August, 1999–2018, Aggressive Surface Water Occurrence (treating all 4 categories of water confidence as Water).

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date September 11, 2025
    Metadata Updated Date November 25, 2025

    Metadata Source

    Harvested from DOI FWS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date September 11, 2025
    Metadata Updated Date November 25, 2025
    Publisher U.S. Fish and Wildlife Service
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/fws-servcat-130644
    Data First Published 2020-06-01T00:00:00Z
    Data Last Modified 2020-06-01T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:18
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/fws-data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id dca70a83-10fe-4493-9f7d-991090182275
    Harvest Source Id f51f1f6c-4e4a-4e0a-b4e3-a5577c6dcc19
    Harvest Source Title DOI FWS DCAT-US
    Homepage URL https://iris.fws.gov/APPS/ServCat/Reference/Profile/130644
    Metadata Type geospatial
    Program Code 010:094, 010:028
    Source Datajson Identifier True
    Source Hash 190290f46a6ce1d879ece886cbfc1506ad982207d4430335d6e8d766a0e07692
    Source Schema Version 1.1

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